A high-speed precision seed metering device with internal air suction

Abstract

The invention discloses an inner-inflated suction type high-speed precision seed metering device, which comprises a front casing, a rear casing, a seeding disk, a seed unloading wheel and a seeding shaft. The wall thickness of the seeding disk is evenly distributed along the circumferential direction A number of combined holes composed of filling grooves and inoculation holes. The bottom of the filling groove is provided with a hole replacement plate that is consistent with the contour of the bottom of the filling groove. A boss is formed on the hole replacement plate, and a through hole is opened on the boss. The boss and the suction hole of the type hole replacement plate are provided with a third through hole for the installation of the boss on the bottom of the filling groove, and the suction hole communicates with the filling groove. The inner seed filling type is combined with the air suction type. During the seed filling process, the seeds are not only subjected to the suction of a single airflow, but also are affected by their own gravity and centrifugal force, which increases the filling form, which is beneficial to reduce the leakage filling rate and improve the operation. speed.

Description

technical field [0001] The invention belongs to the technical field of sowing in agricultural machinery, and in particular relates to an inner air-suction type high-speed precision seed metering device. Background technique [0002] Precision seeding is an inevitable trend in the development of modern planting industry. It has the advantages of saving labor and cost, improving crop yield and quality, etc. The main factor in achieving precision seeding depends on the performance of the seed meter. Precision seed meters can be divided into mechanical type and pneumatic type according to their working principle. The mechanical seed metering device is simple in structure, low in cost, and easy to use and maintain, but it has strict requirements on the shape and size of seeds and a high rate of damage to seeds, which cannot meet high-speed precision sowing operations. At present, pneumatic seed metering devices are widely used in precision seeders at home and abroad. It has str...

AI Technical Summary

Problems solved by technology

[0003] The traditional air-suction seed metering method is that the seeds are adsorbed on the suction hole under the action of a single negative pressure airflow. When the seed metering disc is rotating at a high speed, the filling time is short and the adsorption performance is not good, which may easily lead to a leakage rate. high phenomenon

Images